Which statement describes the function y = axn when a = 1 and n is even?

With a = 1, the function is y = xⁿ. Since n is even, both 1ⁿ and (−1)ⁿ equal 1, and 0ⁿ equals 0. So the graph passes through (−1, 1), (0, 0), and (1, 1), as stated in choice C.

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